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How streamlining can help to reduce friction

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What are magnetic material? Give examples

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What is the sound range of human ears

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Define mass. Give unit.

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What soil is made of.

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Write a not on clay.

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How magnets can damagnetized.

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What is air pollution.

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What is a magnet.

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How noise and musical notes are produced.

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What are insulators. Give examples.

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Who was Sir Isaac Newton. How did he discover gravity

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How low and high sounds are produced.

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What is nitrogen? Give importance.

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Describe how lever makes work easier by giving example of its uses from everyday life

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What are multicellular organism.

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What is magnetic field.

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How far away is the Moon from the earth.

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What is solar energy.

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What is Maglev train

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